You can find out the standard industrial classification, or SIC, code for your business by searching the official website for the North American Industry Classification System Association. Users can search for SIC codes by industry on the website, which lists industries such as agricultural, mining and construction.
You can also search industries such as retail trade, public administration, wholesale trade, manufacturing and finance services on the NAICS site.
An SIC code is a four-digit numerical code assigned by the United States government to businesses to identify the primary business duties of the entity. The classification collects, preserves and analyzes data pertaining to the business. All businesses receive SIC codes.